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BigBattery 48V NEXUS 2 LiFePO4 Battery 314AH 16KWH Off-Grid Home Back-up

BigBattery 48V NEXUS 2 LiFePO4 Battery 314AH 16KWH Off-Grid Home Back-up
$2,990.00 - $2,990.00
$2,990.00
$2,990.00 - $2,990.00
$2,990.00
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48V · 314Ah · 16kWh

BigBattery 48V NEXUS 2 LiFePO4 Battery: 314Ah, 16kWh Off-Grid Home Backup

The NEXUS 2 packs 314Ah / 16.08kWh usable energy into a single 48V battery, built specifically for off-grid and whole-home backup use rather than a vehicle or recreational application.

It communicates over RS485, RJ45, or CAN for pairing with a compatible hybrid inverter, rates at 8,000+ cycles, and carries the same 12-year warranty as the rest of BigBattery's LiFePO4 line.

BigBattery 48V NEXUS 2 LiFePO4 Battery, 314Ah, 16kWh
12-Year Warranty*
Lowest Price Guarantee
Authorized BigBattery Dealer
Free Shipping
0% APR Financing
Expert Support: (303) 876-7654

Why the NEXUS 2

16kWh in One Unit

314Ah at 51.2V delivers 16.08kWh usable energy from a single battery — fewer units to rack, wire, and manage than an equivalent bank of smaller modules.

Built for Off-Grid Home Backup

Sized and positioned by BigBattery specifically for whole-home off-grid and backup use, not a vehicle or powersports application.

8,000+ Cycle Life

Rated for 8,000+ cycles, well beyond most home battery chemistries, with 150A continuous and a 270A 1-second peak for inverter surge loads.

RS485 / CAN / RJ45, Up to 15 in Parallel

Multiple communication options for pairing with a compatible hybrid inverter, and up to 15 units can be paralleled for up to 240kWh in one system.

12-Year Warranty

BigBattery backs the NEXUS 2 with a 12-year warranty, in line with the rest of its LiFePO4 lineup.

IP54 Enclosure

Protected against dust and splashing water — sized for a garage, shed, or utility room installation.

What's Included

What's included with the BigBattery NEXUS 2

What You Get

  • 1 × BigBattery 48V NEXUS 2 LiFePO4 Battery (314Ah / 16.08kWh usable)
  • Documentation

Full Specifications

Model BigBattery 48V NEXUS 2
Nominal Voltage 51.2V (48V system)
Capacity 314Ah; 16.08kWh usable energy
Battery Chemistry LiFePO4
Cycle Life 8,000+
Continuous Discharge 150A / 7.6kW
Peak Discharge 270A for 1 second
Max Charge Current 140A
Charge Temperature Range 32°F to 113°F (0°C to 45°C)
Discharge Temperature Range -4°F to 113°F (-20°C to 45°C)
Weight ~315 lb
Dimensions 19.7"D × 27.5"W × 15.7"H (500 × 700 × 400 mm)
Ingress Protection IP54
Communication RS485 / RJ45 / CAN
Max Parallel Up to 15 units (up to 240kWh total)
Warranty 12 years
Certifications Not published on the NEXUS 2 product page itself (no CE, UL, or UN38.3 listed there — those are listed on BigBattery's Eagle 2 pages but not this one)

Authorized BigBattery Dealer

We sell genuine BigBattery products backed by BigBattery's own warranty.

Lowest Price Guarantee

Find it cheaper from another authorized dealer? Call (303) 876-7654 before you order.

Real Support, Not a Ticket Queue

Sizing a battery bank or system? Call (303) 876-7654 and talk to a person.

BigBattery 48V NEXUS 2 LiFePO4 Battery: 314Ah, 16kWh Off-Grid Home Backup: Frequently Asked Questions

What is the NEXUS 2 designed for?
BigBattery positions the NEXUS 2 specifically as an off-grid home backup battery — 16.08kWh usable energy in a single unit, built to pair with a hybrid inverter for whole-home use rather than a vehicle or powersports application.
Can I run more than one NEXUS 2 together?
Yes — up to 15 units can be paralleled for up to 240kWh total in one system. Call (303) 876-7654 before ordering if you're planning a multi-battery installation and we can help you size it.
Is this UL certified?
BigBattery's NEXUS 2 product page does not list CE, UL, or UN38.3 certification for this model, unlike its Eagle 2 pages, which do list CE/EMC/UN38.3. If a certification is required for your installation or permitting, call (303) 876-7654 and we'll confirm the current status before you order.
How many charge cycles does this battery get?
BigBattery rates the NEXUS 2 at 8,000+ cycles, well above most home battery chemistries.
What inverters is this compatible with?
The NEXUS 2 communicates over RS485, RJ45, or CAN, which covers most hybrid inverters built for large-format LiFePO4 batteries. Confirm compatibility with your specific inverter — call (303) 876-7654 and we can help you check.
Do you offer financing or price matching?
Yes. We offer 0% APR financing options through Affirm at checkout, and our Lowest Price Guarantee applies — if you find this product cheaper at another authorized BigBattery dealer, call us at (303) 876-7654 before you order and we'll take care of it.
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